Fiber Optic data switch is not working properly - Reg.

Hello,
Connect your replacement switches back-to-back with a fiber patch cable and verify for sure that their fiber ports work. If they do, then double check the patch cords you're using at each end in the same manner. If you really want to slog through it yourself and have the right patch cables you can use the switches as cheap testers to test at each of the splices (assuming you have connectors on the splices).

If the switches do work, get a better fiber contractor in there.

Thanks

@BVRIT hello,
you can bind the switch SN number to your account to download the firmware.